Students often exhibit overconfident grade expectations and tend to overestimate the actual course grade at the completion of a course. Current theories of student motivation suggest such overconfidence may lead students to study less than if they had accurate grade perceptions. The authors report the findings of a survey of students enrolled in economics and quantitative courses at a large public university. They analyze the difference between a student's expected and actual grade and how teacher pedagogies can influence student overconfidence. They find male students and those with lower GPAs exhibit greater overconfidence. Students in lower division classes have a greater tendency to be overconfident than do those in upper division classes. The findings also indicate that grading practices influence overconfidence. (Contains 4 tables and 5 notes.)